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Pacific Southwest, Region 9

Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations

Air Actions, California

Air Actions in the San Joaquin Valley - PM2.5

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On this page:

  • August 6, 2015: Proposed Withdrawal of EPA's 2014 Approval of San Joaquin Valley's (SJV) PM2.5 Contingency Measures and Proposed Disapproval 
  • March 27, 2015: Final Reclassification as Serious Nonattainment for the 1997 PM2.5 Standards 
  • December, 2014: Proposal to reclassify the San Joaquin Valley Moderate nonattainment areas as "Serious" nonattainment for the 1997 PM2.5 standards
  • December, 2014: Proposed Approval of San Joaquin Valley Plan and Supplement for the 2006 PM2.5 Standard and Proposed Reclassification to Serious for the 2006 PM2.5 Standard
  • May, 2014 - Final Approval of the San Joaquin Valley 1997 PM2.5 Contingency Measures
  • Older Air Actions

August 6, 2015: Proposed Withdrawal of EPA's 2014 Approval of San Joaquin Valley's (SJV) PM2.5 Contingency Measures and Proposed Disapproval

On August 6, 2015, Regional Administrator Jared Blumenfeld signed a Federal Register notice proposing to withdraw EPA's 2014 Approval of the SJV's PM2.5 contingency measures, and simultaneously proposing to disapprove the contingency measures. EPA is also proposing that the disapproval will not trigger sanctions or FIP clocks. The notice will be published in the Federal Register and provide for a 30-day public comment period.

Contact Information

Doris Lo (Lo.Doris@epa.gov)
(415) 972-3959

Niloufar Nazmi (Nazmi.Niloufar@epa.gov)
(415) 972-3684


March 27, 2015: Final Reclassification as Serious Nonattainment for the 1997 PM2.5 Standards 

EPA is taking final action to reclassify the San Joaquin Valley Moderate nonattainment areas, including areas of Indian country within it, as Serious nonattainment for the 1997 PM2.5o standards.

December 18, 2014: Proposed Reclassification as Serious Nonattainment for the 1997 PM2.5 Standards

EPA is proposing to reclassify the San Joaquin Valley Moderate nonattainment areas, including areas of Indian country within it, as Serious nonattainment for the 1997 PM2.5 standards.


Proposed Approval of San Joaquin Valley Plan and Supplement for the 2006 PM2.5 Standard and Proposed Reclassification to Serious for the 2006 PM2.5 Standard

December 29, 2014: EPA is proposing to approve the San Joaquin Valley PM2.5 Plan and Supplement, which address Clean Air Act requirements for the 2006 PM2.5 standard, and proposed to reclassify the area as a serious nonattainment area for the 2006 PM2.5 standard. EPA is providing a 45-day public comment period from the date of publication in the Federal Register.


Final Approval of the San Joaquin Valley 1997 PM2.5 Contingency Measures

May 22, 2014: EPA approved the San Joaquin Valley's 1997 PM2.5 NAAQS contingency measures. The sanctions and FIP clocks that were triggered by the EPA's 2011 disapproval of these PM2.5 contingency measures will be terminated upon the effective date of this action.

Proposed Approval of the San Joaquin Valley 1997 PM2.5 Contingency Measures and Interim-Final Rule to Stay and Defer Sanctions

August 15, 2013: EPA signed a proposal to approve the San Joaquin Valley’s 1997 PM2.5 NAAQS contingency measures. EPA has also signed an Interim Final Rule to stay off-set sanctions currently in place in the San Joaquin Valley and defer the start of highway sanctions in the area.


Final Action on San Joaquin Valley 2008 PM2.5 Plan

September 30, 2011: EPA approved nearly all elements of the San Joaquin Valley 2008 PM2.5 plan.

Contact Information
Frances Wicher (Wicher.Frances@epa.gov)
(415) 972-3957

Proposed Partial Approval/Partial Disapproval of San Joaquin Valley 2008 PM2.5 Plan

June 29, 2011: EPA proposed action on the San Joaquin Valley 2008 PM2.5 plan.

Partial Approval and Disapproval of the San Joaquin Valley 2008 PM2.5 Plan

November 8, 2010: EPA's Regional Administrator signed a proposed rule to approve in part and disapprove in part the San Joaquin Valley 2008 PM2.5 plan. The parts of the plan; prepared by the San Joaquin Valley Unified Air Pollution Control District and the California Air Resources Board that we proposed to approve; strengthen the SIP. The portions of the plan we proposed to disapprove; do not meet the requirements of the Clean Air Act and EPA regulations.


San Joaquin Valley Particulate Matter (PM-10) Pollution »
San Joaquin Valley Ozone Actions »
Related Information: New Source Review Rules »

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